NAME

       form_page - set and get form page number

SYNOPSIS

       #include <form.h>
       int set_current_field(FORM *form, FIELD *field);
       FIELD *current_field(const FORM *);
       int unfocus_current_field(FORM *form);
       int set_form_page(FORM *form, int n);
       int form_page(const FORM *form);
       int field_index(const FIELD *field);

DESCRIPTION

       The  function  set_current_field  sets  the current field of the given form; current_field
       returns the current field of the given form.

       The function unfocus_current_field removes the focus from the current field of  the  form.
       In such state, inquiries via current_field shall return a NULL pointer.

       The function set_form_page sets the form's page number (goes to page n of the form).

       The function form_page returns the form's current page number.

       The  function field_index returns the index of the field in the field array of the form it
       is connected to. It returns ERR if the argument is the null pointer or the  field  is  not
       connected.

RETURN VALUE

       Except for form_page, each routine returns one of the following:

       E_OK The routine succeeded.

       E_BAD_ARGUMENT
            Routine detected an incorrect or out-of-range argument.

       E_BAD_STATE
            Routine was called from an initialization or termination function.

       E_INVALID_FIELD
            Contents of a field are not valid.

       E_REQUEST_DENIED
            The form driver could not process the request.

       E_SYSTEM_ERROR
            System error occurred (see errno).

SEE ALSO

       ncurses(3NCURSES), form(3FORM).

NOTES

       The header file <form.h> automatically includes the header file <curses.h>.

PORTABILITY

       These  routines  emulate the System V forms library.  They were not supported on Version 7
       or BSD versions.

       The unfocus_current_field function is an ncurses extension.

AUTHORS

       Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric S. Raymond.

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